Useful in the following ways

Presentation of Different Levels of Information –examined in various levels of detail. Deeper levels are possible on additional windows.

Presentation of Multiple Levels of Information –variable information needed to complete a task can be displayed simultaneously in adjacent windows.

Sequential Presentation of Levels or Kinds of Information –Steps to accomplish a task can be sequentially presented through windows.

Access to different sources of Information –Independent sources of information may have to be accessed at the same time. This information may be presented alongside the problem to facilitate its solution.

Combining Multiple Sources of Information –text from several documents may have to be reviewed and combined into one. Pertinent information is selected from one window and copied into another.

Performing More than one Task –More than one task can be performed at one time. Tasks of higher importance can interrupt less important ones.

Reminding –remind viewer of things likely to be of use in the near future.

Monitoring –internal and external changes can be monitored. Data in one window can be modified and its effect on data in another window can be studied.

Multiple Representations of the same task –the same thing can be looked at in several ways: alternate drafts, different representations of data.

While moving back and forth between multiple windows/tasks is common in nay windowing environment, users identified the requirement for displaying only one window at full size, concerned that customers, also looking at the screen, might be distracted by partially visible windows.